Transition condition - Variable equals variable?

I would like to create a Condition in my "Release to Production" transition that checked to make sure the SolidWorks drawing "Revision" custom property is equal to the EPDM Revision.   It seems that the Condition dialog only allows text inside of the Value field.   Is there it possible to do this?

Condition:

Variable = Revision

Comparison = Text Equal To

Value = Next EPDM Revision

Configuration =

SolidworksSolidworks Pdm enterprise Pdm